Crusher plate support for roll crushers



March 2, 1943. s, E. KRIDER CRUSHER PLATE SUPPORT 4FOR ROLL yCRUSHERS 2 Sheets-Sheet l Filed July 15. 1941 Unhnnnnnnnnnnn March 2, 1943; s. E. KRIDER GRUSHER PLATE SUPORT FOR ROLL CRUSHERS 2 Sheets-Sheet 2 Filed July 15, 1941 Georgel'. Krl'der Patented Mar. 2, 1943 OFFICE causata PLATE SUPPORT Foa ROLL oRUsHEas George E. Kri'der, Duncansville, Pa. Application July 15, 1941, Serial No. 402,528

3 Claims.

The present invention relates to improved mechanism for allowing the crusher plate in a roll type crushing machine to move away from the crushing roll when the material passing through to' be uncrushable, or of such hardness as would damage the teeth of the roll.

One object of the invention is to provide means for resilientl-y supporting the breaker plate in a normal position relative to the roll which will allow the plate to be moved away from the roll and against the resilient mechanism.

A further object of the invention is to provide an adjusting means for the resilient mechanism which is simple in construction and easy to operate.

While several of the specic objects of the machine have been pointed out, other objects will be apparent from the specifications when taken in connection with the accompanying drawings in which:

Fig. 1 is a fragmentary view of the crushing machine, partly in elevation, and partly in section.

Fig. 2 is a sectional view 2-2 of Fig. 1.

Fig. 3 is a top plan view of chine as shown in Fig. 1.

Fig. 4 is an end View looking toward the left of Fig. 3.

Fig. 5 is an enlarged view of the rod member 64.

Referring to the drawings, the numeral I designates the customary frame of the machine. Supported on the frame I is a crusher roll 2. The crusher roll is driven by a gear 4 attached to the shaft 5 of the roll which is in turn driven by a smaller gear 6. Located above the crushing roll is a hopper 8, into which the material to be crushed is deposited. At one side of the crushing roll is a crusher plate I il. The crusher plate is supported at a point adjacent the top of the frame from a shaft I2 and the lower end is located at a predetermined distance from the crusher roll below a horizontal plane passing through the aXis of the roll. This arrangement forms a pocket between the crusher roll and the crusher plate and the material is broken by the teeth I4 and I6 as the roll is rotated in the direction indicated by the arrow in Fig. 1.

The bottom of the crusher plate is held inwardly toward the crusher roll by a mechanism comprising toggle joints, or link members I8, 20, 22, and 24. One end of the toggle joint is connected with the crusher plate at II, II and II, and the other end of the toggle joint is supported taken along the line the crushing mathe machine is of such a character as upon a iixed member 28 at 29 and 29. The member 28 is adapted to be adjusted along the frame relative to the roll of the crusher. This member is supported by the portion I' of,k the frame and held against side motion by the stops 3| and 3|. The adjustment of the resilient mechanism is accomplished by providing a threaded shaft 30 which is rotatably supported within the bearings 32 and 34 in one endv of the frame. The shaft is provided with right and left hand threads 36 and 38. Threadably received on each end of the shaft 30 are tapered members or blocks 4D and 42, which are adapted to move longitudinally along the rod when it is rotated by the crank members 44. It will be seen by this arrangement that the member 2B carrying the toggle links will be moved inwardly toward the plate Ill when the shaft is rotated in such a way as to cause the block members to be moved outwardly, and when the blocks are moved inwardly the member 28 will be moved in the opposite direction, that is, it will move in the direction of the rod 3U. One side of the member 28 is also tapered to conform to the taper of the blocks or members 40 and 42.

In order to take up the slack in the toggle joints and hold the plate 28 in Contact with the block members 40 and 42 there is provided a spring 5t Which has one of its ends connected with the breaker plate at 52 and the other end connected with a bracket 54 attached to the frame. The central or intermediate hinges and 62 of the toggle joints are pivotably connected to an adjustable rod 64 which preferably operates inside a spring 66. The spring 66 is of such tension as to prevent the toggle joints from moving outwardly under normal crushing conditions. However, if the teeth of the roll encounter hard and diiiicult objects the plate will be moved back against the tension of the spring 6E and will allow the article to pass between the crushing roll and the crushing plate without harm to the machine.

The pressure required to begin the initial movement of the breaker plate I0 is regulated by the length of the rod 64. That is, the nearer thelines A and B are the intermediate hinges 60 and 62 the more pressure it will require on the crusher plate, and the further from this line the easier the initial movement will be. Therefore, the amountA of pressure necessary for the initial movement of the plate may be predetermined by the length of the rod 64. The length of this rod is adjustable by having a sleeve portion 65 and a threaded rod 64. The rod is provided with a nut 61 and a tapered lock nut 69, the end of the rod 64 being slidable within the sleeve, allowing the rod 64 to move outwardly, but is prevented from moving inwardly beyond a predetermined point by the nuts 6l and 69. The tapered nut 69 is provided to prevent the interference of the nuts with the spring member 66. The spring 66 is interchangeable for materials of different hardness. For materials such as coal, etc., thev sprvingrcould be of substantially lesser tensile strengthI than the springre'quired for the crushing of rock, ores,` and the like.

In operation the material is deposited within the hopper 8 and is carried by the crusher roll 2 into the pocket formed between the roll andthe Crusher plate l0. The Crusher plate is provided with slots 68 for accommodating the longer teeth I4 of the crusher roll while the smaller teeth I6 2,312,823 Y .y l l tail, it is'not intended that it be limited to this l specific structure as the scope of the invention is best :defined in the following claims.

I claim:

1. The combination with a hinged crusher plate, said Crusher plate cooperating with a Crusher roller in a frame, a crusher plate ad#l justing bar mounted in the frame, means for moving said crusher bar towards and away from the` Crusher plate, outwardly diverging double link connections between' the bar and the plate, a contractible spring connecting said double links at opposite sides of the plate, of a limiting device -connecting said double links and located between the double links and forming means for limiting the movement of the plate towards the crusher roller.

pass beneath the plate. The material is crushed f between the roll and the Crusher plate and between the longer teeth and the slots. For example, with the present arrangement if there is mixed with the material being crushed, rock, or other substances, of such hardness as would damage the machine, the crushing plate l0 will move outwardly from the roll against the resilient mechanism and allow this substance to pass, after which the plate would return to its normal location.

While the invention has been described in de- 2. A device as set forth in claim 1 wherein the limiting means comprises a sleeve carried by one of the double links, a threaded shaft carried by the other d ouble link and telescopically engaging Within the sleeve and an adjustable member threaded on the threaded shaft and cooperating with one end of the sleeve.

3. Adevice as set forth in claim 1 wherein the limiting means connecting the'double links extends through the contractible spring.

GEORGE E. KRIDER. 

